GM0MEM — reception at SO8OO

Signals decoded by SO8OO in southeastern Poland. FT8 and CW have separate histories; all times are UTC.

FT8 activity

DXCC entity inferred from callsign: Scotland Most frequent locator attributed to this token: IO87

Receiver-side FT8 activity involving GM0MEM, decoded by SO8OO in southeastern Poland. 23 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 7 UTC dates in the available aggregate history. Observed between 2026-06-20 and 2026-09-17.

These are automated observations at the SO8OO receiver, not an official contact log. Times are UTC. Attribution follows decoded FT8 message structure: CQ uses the first token and directed-looking messages use the second. Free text that resembles a directed message can be attributed imperfectly. Summary S/N reflects propagation plus SO8OO receiver, antenna and local-noise conditions. Counts are not adjusted for monitoring outages; transmissions that were not decoded are absent. Inferred entity and location data may be inaccurate for portable, remote or special-event operation.

SO8OO decoded 23 FT8 messages attributed to GM0MEM as the transmitting token by decoded message structure across 7 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (87%), followed by 40 m (13%). Several six-hour UTC windows tied for the largest share (83%), so no unique busiest interval is claimed. Most successfully decoded messages attributed to this token fell in SO8OO's moderate S/N range (91%); the estimated median was -11 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-11 dB

Estimated median S/N

Bands

40m · 3 20m · 20

First attributed message: 2026-06-20
Last attributed message: 2026-09-17 18:06 UTC

Observed FT8 message patterns

Attributed sample: 23 messages
Active dates: 7 UTC dates
Estimated median S/N: -11 dB
Estimated 10th-90th percentile: -14 to -9 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 1, moderate (-15 to -9 dB) 21, strong (≥ -8 dB) 1.

WSJT-X defines S/N reports against a 2,500 Hz reference noise bandwidth. The ranges above are SO8OO receiver-side display categories, not official WSJT-X classes, transmitter-power measurements or estimates of how easy the station is to hear elsewhere. Statistics include only successful decodes on SO8OO's monitored FT8 channels; transmissions that were not decoded are absent.

Frequent counterpart tokens observed at SO8OO

Tokens most often paired with GM0MEM in decoded directed-looking exchanges:

DL1UDO · Fed. Rep. of Germany IS0KNG · Sardinia OK2CNI · Czech Republic RA3XFR · European Russia RU3QR · European Russia YC1FEY · Indonesia ON1DGN · Belgium SP5EXA · Poland

Attributed messages by UTC hour

Rolling 90-day UTC chart window. Counts follow decoded message structure: the first token for CQ, or the second token in a directed-looking message.

Most frequent locator attributed to GM0MEM

The map compares the centres and boundaries of the locator field attributed to this token by decoded message structure, 2° × 1° as a Maidenhead square, and SO8OO's six-character receiver square. The separation is not an exact antenna-to-antenna distance or a radio-path length.

Attributed locator: IO87 · 16 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,821 km (approx.)
Last such locator decoded: 2026-08-30 08:47 UTC

A decoded locator can describe portable, remote or special-event operation and is not proof of a permanent station address or transmitter identity.

Observed FT8 exchanges

S/N cells show: decoded at SO8OO / report transmitted by the counterpart. An observed exchange is not a QSL or an official logbook confirmation.

Time UTC	Band	GM0MEM S/N	Counterpart	Counterpart S/N	Msgs	Capture
11-05 06:48	40m	- / -9	SP5EXA	+10 / -	3	✓ Closing fragment
09-17 18:09	80m	- / -	DF3YG	0 / -	2	Partial capture
09-17 18:09	80m	- / -10	DO9SAM	+10 / -	2	Partial capture
09-17 18:05	40m	-14 / -15	ON1DGN	-6 / -	3	✓ Closing observed
08-28 13:40	20m	- / -11	RU3QR	-6 / -	6	✓ Closing fragment
08-22 17:52	20m	-14 / -	9M2HUS	- / -19	2	Partial capture
08-22 17:46	20m	-11 / -	XU7O	- / -	2	Partial capture
08-22 17:42	20m	-11 / -	XU7O	- / -	3	Partial capture
08-14 18:04	20m	-9 / -	A61CK	- / -	2	Partial capture
08-12 07:07	20m	- / -9	RA3XFR	-18 / -	2	✓ Closing fragment
08-12 07:03	20m	- / -16	IS0KNG	-15 / -	2	✓ Closing fragment
08-12 07:03	20m	- / -12	OK2CNI	-3 / -	5	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

Frequency values are decoder audio offsets in hertz, not RF frequencies.

40m

UTC    dB Audio  Message
180700 -10 1228  CQ GM0MEM IO87
180730 -10 1228  UN7PPV GM0MEM R-22
134645 -19 1440  GM0MEM UB2FEK KO04
180530  -6 1487  GM0MEM ON1DGN -15
180600  +0 2763  GM0MEM R6LPF KN97
180600  -6 1487  GM0MEM ON1DGN RR73
180615 -14 1698  ON1DGN GM0MEM 73
064600 -18 2180  GM0MEM HB9ZHK JN47
064830 +10 1233  GM0MEM SP5EXA KO02
064830 -13 1735  GM0MEM IK4JPP -16
064900  +9 1233  GM0MEM SP5EXA R-09 (x2)
065030  -3  640  GM0MEM RN1TV -13

80m

UTC    dB Audio  Message
180900  +7 1661  GM0MEM DO9SAM R-10 (x2)
180930  +1 2741  GM0MEM DF3YG JO33 (x2)

20m

UTC    dB Audio  Message
174315  -9 1267  XU7O GM0MEM IO87 (x2)
174445  -9 1267  YC1FEY GM0MEM RR73
174615  -9 1267  XU7O GM0MEM IO87 (x2)
175215 -14 1267  9M2HUS GM0MEM R-19 (x2)
134045  -8  920  GM0MEM RU3QR -11 (x5)
134245  -1 1022  GM0MEM DL1UDO 73
134315  -3  920  GM0MEM RU3QR -12
084700 -11 1732  C31VM GM0MEM IO87

Decoder S/N history by band

Count-weighted daily averages across messages attributed to this profiled token and successfully decoded at SO8OO, limited to the rolling 90-day UTC chart window.

CW

No CW receptions recorded for this callsign in the last 30 days.

Explore CW reception at SO8OO

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